Direct Synthesis of Dibenzotropones from o-Alkynylaryl Nitriles via Pd(II)-Catalyzed Cascade Reaction.
Herein, we report a one-step Pd(II)-catalyzed strategy for the synthesis of synthetically challenging and medicinally important functionalized dibenzotropone scaffolds from readily accessible o-alkynylaryl nitriles and electron-rich aryl boronic acids. The cascade process involves regioselective 1,2-syn-carbopalladatio...